Hook



FIG. 1 is a perspective view of a hook;

FIG. 2 is a front side elevation view of the hook of FIG. 1;

FIG. 3 is a right side elevation view of the hook of FIG. 1;

FIG. 4 is a left side elevation view of the hook of FIG. 1; and,

FIG. 5 is a rear side elevation view of the hook of FIG. 1.

The broken lines represent portions of the structure that forms no part of the claim. 

CLAIM The ornamental design for a hook, as shown and described. 